DIRLINE  self-instructional guide. 

 - Bethesda, MD  National Library of Medicine  1990. 
 - 40 p.  ill.  28 cm. 
<br/><br/><label>LCCN: </label>gp 90011253  
<br/><br/><label>Subjects--Corporate Names: </label><br/>National Institutes of Health U.S.--Data bases--Handbooks, manuals, etc.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems--Medicine--Handbooks, manuals, etc.
<br/><br/><label>GPO Item No.: </label>508-K 
<br/><br/><label>Gov. Doc. Class. No.: </label>HE 20.3608:D 62